media: em28xx-i2c: fix most coding style issues
There are a number of coding style issues at em28xx-i2c. Fix most of them, by using checkpatch in strict mode to point for it. Automatic fixes were made with --fix-inplace, but those were complemented by manual work. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab
parent
349ac5bba1
commit
8adbc7d68a
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@ -18,7 +18,6 @@
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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#include "em28xx.h"
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#include <linux/module.h>
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@ -47,7 +46,6 @@ MODULE_PARM_DESC(i2c_debug, "i2c debug message level (1: normal debug, 2: show I
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"i2c: %s: " fmt, __func__, ## arg); \
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} while (0)
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/*
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* Time in msecs to wait for i2c xfers to finish.
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* 35ms is the maximum time a SMBUS device could wait when
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@ -91,7 +89,6 @@ static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
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if (len < 1 || len > 4)
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return -EOPNOTSUPP;
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BUG_ON(len < 1 || len > 4);
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b2[5] = 0x80 + len - 1;
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b2[4] = addr;
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b2[3] = buf[0];
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@ -125,7 +122,7 @@ static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
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ret);
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return ret;
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}
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msleep(5);
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usleep_range(5000, 6000);
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}
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dprintk(0, "write to i2c device at 0x%x timed out\n", addr);
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return -ETIMEDOUT;
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@ -172,14 +169,13 @@ static int em2800_i2c_recv_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
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ret);
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return ret;
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}
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msleep(5);
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usleep_range(5000, 6000);
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}
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if (ret != 0x84 + len - 1) {
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if (ret != 0x84 + len - 1)
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dprintk(0, "read from i2c device at 0x%x timed out\n", addr);
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}
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/* get the received message */
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ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4-len, buf2, len);
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ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4 - len, buf2, len);
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if (ret != len) {
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dev_warn(&dev->intf->dev,
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"reading from i2c device at 0x%x failed: couldn't get the received message from the bridge (error=%i)\n",
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@ -231,12 +227,11 @@ static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
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"writing to i2c device at 0x%x failed (error=%i)\n",
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addr, ret);
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return ret;
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} else {
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dev_warn(&dev->intf->dev,
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"%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
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len, addr, ret);
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return -EIO;
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}
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dev_warn(&dev->intf->dev,
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"%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
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len, addr, ret);
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return -EIO;
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}
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/* wait for completion */
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@ -255,7 +250,7 @@ static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
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ret);
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return ret;
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}
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msleep(5);
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usleep_range(5000, 6000);
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/*
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* NOTE: do we really have to wait for success ?
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* Never seen anything else than 0x00 or 0x10
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@ -378,12 +373,12 @@ static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
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"writing to i2c device at 0x%x failed (error=%i)\n",
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addr, ret);
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return ret;
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} else {
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dev_warn(&dev->intf->dev,
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"%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
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len, addr, ret);
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return -EIO;
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}
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dev_warn(&dev->intf->dev,
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"%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
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len, addr, ret);
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return -EIO;
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}
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/* Check success */
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ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000);
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@ -393,7 +388,8 @@ static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
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*/
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if (!ret)
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return len;
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else if (ret > 0) {
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if (ret > 0) {
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dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret);
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return -ENXIO;
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}
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@ -447,7 +443,8 @@ static int em25xx_bus_B_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf,
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*/
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if (!ret)
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return len;
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else if (ret > 0) {
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if (ret > 0) {
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dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret);
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return -ENXIO;
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}
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@ -535,13 +532,15 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
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{
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struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data;
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struct em28xx *dev = i2c_bus->dev;
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unsigned bus = i2c_bus->bus;
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unsigned int bus = i2c_bus->bus;
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int addr, rc, i;
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u8 reg;
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/* prevent i2c xfer attempts after device is disconnected
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some fe's try to do i2c writes/reads from their release
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interfaces when called in disconnect path */
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/*
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* prevent i2c xfer attempts after device is disconnected
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* some fe's try to do i2c writes/reads from their release
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* interfaces when called in disconnect path
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*/
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if (dev->disconnected)
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return -ENODEV;
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@ -624,12 +623,13 @@ static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
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if (len == length) {
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c = (char)len;
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len = -1;
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} else
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} else {
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c = *buf++;
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}
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l = (l << 8) | c;
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len++;
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if ((len & (32 / 8 - 1)) == 0)
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hash = ((hash^l) * 0x9e370001UL);
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hash = ((hash ^ l) * 0x9e370001UL);
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} while (len);
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return (hash >> (32 - bits)) & 0xffffffffUL;
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@ -639,7 +639,7 @@ static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
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* Helper function to read data blocks from i2c clients with 8 or 16 bit
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* address width, 8 bit register width and auto incrementation been activated
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*/
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static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr,
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static int em28xx_i2c_read_block(struct em28xx *dev, unsigned int bus, u16 addr,
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bool addr_w16, u16 len, u8 *data)
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{
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int remain = len, rsize, rsize_max, ret;
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@ -651,7 +651,8 @@ static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr,
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/* Select address */
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buf[0] = addr >> 8;
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buf[1] = addr & 0xff;
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ret = i2c_master_send(&dev->i2c_client[bus], buf + !addr_w16, 1 + addr_w16);
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ret = i2c_master_send(&dev->i2c_client[bus],
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buf + !addr_w16, 1 + addr_w16);
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if (ret < 0)
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return ret;
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/* Read data */
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@ -676,7 +677,7 @@ static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr,
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return len;
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}
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static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus,
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static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned int bus,
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u8 **eedata, u16 *eedata_len)
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{
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const u16 len = 256;
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@ -704,7 +705,7 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus,
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}
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data = kzalloc(len, GFP_KERNEL);
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if (data == NULL)
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if (!data)
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return -ENOMEM;
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/* Read EEPROM content */
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@ -796,7 +797,10 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus,
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return 0;
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}
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/* TODO: decrypt eeprom data for camera bridges (em25xx, em276x+) */
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/*
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* TODO: decrypt eeprom data for camera bridges
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* (em25xx, em276x+)
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*/
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} else if (!dev->eeprom_addrwidth_16bit &&
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data[0] == 0x1a && data[1] == 0xeb &&
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@ -886,8 +890,8 @@ static u32 functionality(struct i2c_adapter *i2c_adap)
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{
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struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data;
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if ((i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX) ||
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(i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)) {
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if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX ||
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i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B) {
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return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
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} else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800) {
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return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL) &
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@ -920,7 +924,7 @@ static const struct i2c_client em28xx_client_template = {
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* incomplete list of known devices
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*/
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static char *i2c_devs[128] = {
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[0x1c >> 1] = "lgdt330x",
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[0x1c >> 1] = "lgdt330x",
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[0x3e >> 1] = "remote IR sensor",
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[0x4a >> 1] = "saa7113h",
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[0x52 >> 1] = "drxk",
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@ -943,7 +947,7 @@ static char *i2c_devs[128] = {
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* do_i2c_scan()
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* check i2c address range for devices
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*/
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void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus)
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void em28xx_do_i2c_scan(struct em28xx *dev, unsigned int bus)
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{
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u8 i2c_devicelist[128];
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unsigned char buf;
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@ -971,13 +975,14 @@ void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus)
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* em28xx_i2c_register()
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* register i2c bus
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*/
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int em28xx_i2c_register(struct em28xx *dev, unsigned bus,
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int em28xx_i2c_register(struct em28xx *dev, unsigned int bus,
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enum em28xx_i2c_algo_type algo_type)
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{
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int retval;
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BUG_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg);
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BUG_ON(!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req);
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if (WARN_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg ||
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!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req))
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return -ENODEV;
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if (bus >= NUM_I2C_BUSES)
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return -ENODEV;
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@ -1004,8 +1009,9 @@ int em28xx_i2c_register(struct em28xx *dev, unsigned bus,
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/* Up to now, all eeproms are at bus 0 */
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if (!bus) {
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retval = em28xx_i2c_eeprom(dev, bus, &dev->eedata, &dev->eedata_len);
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if ((retval < 0) && (retval != -ENODEV)) {
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retval = em28xx_i2c_eeprom(dev, bus,
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&dev->eedata, &dev->eedata_len);
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if (retval < 0 && retval != -ENODEV) {
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dev_err(&dev->intf->dev,
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"%s: em28xx_i2_eeprom failed! retval [%d]\n",
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__func__, retval);
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@ -1022,7 +1028,7 @@ int em28xx_i2c_register(struct em28xx *dev, unsigned bus,
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* em28xx_i2c_unregister()
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* unregister i2c_bus
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*/
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int em28xx_i2c_unregister(struct em28xx *dev, unsigned bus)
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int em28xx_i2c_unregister(struct em28xx *dev, unsigned int bus)
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{
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if (bus >= NUM_I2C_BUSES)
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return -ENODEV;
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